It is derived from the root word:"WIGGER". (see "wigger").
"WIG' NATION" is a demographical reference to a significant population, and/or dense location in which wiggers, "stomp" or reside. These "WIGG' NATIONS" are usually slightly outside of the suburbs or slightly inside the suburbs. This depends solely on how "hard" this mob of wiggers are. Please note; "WIGG NATIONS" are not stationary they are located when and where a population of wiggers are or have been.

As we passed through town after school a bunch of "wiggers" boarded the bus. Come to find out shortly after that, they began to rap gangsta' type music, cussing one another, and calling each other either, "blood" or "bitch" depending on gender. Then I realized the bus had become the "WIGG' NATION."